PCA8537 View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
Manufacturer
PCA8537 Datasheet PDF : 82 Pages
| |||
NXP Semiconductors
PCA8537
Automotive LCD driver for multiplex rates up to 1:8
8.1.12 Command: Frame-frequency
With the Frame-frequency command, the frame frequency and the output clock frequency
can be configured.
Table 17. Frame frequency - frame frequency and output clock frequency command bit
description
Bit
Symbol
Binary value Description
7 to 5 -
011
fixed value
4 to 0 F[4:0]
see Table 18 frame frequency values, see Table 18
Table 18.
F[4:0]
Frame frequency values
Nominal frame
frequency ffr (Hz)[1]
0 0000
0 0001
0 0010
0 0011
0 0100
0 0101
0 0110
0 0111
0 1000
0 1001
0 1010
0 1011
0 1100
0 1101
0 1110[3]
0 1111
1 0000
1 0001
1 0010
1 0011
10100, 10101
10110, 10111
11000 to 11111
60
70
80
91
100
109
120
129.7
141.2
150
160
171.4
177.8
192
200
208.7
218.2
228.6
240
252.6
266.7
282.4
300
Resultant output
clock frequency,
fclk(o) (Hz)
2 880
3 360
3 840
4 368
4 800
5 232
5 760
6 226
6 778
7 200
7 680
8 227
8 534
9 216
9 600
10 018
10 474
10 973
11 520
12 125
12 802
13 555
14 400
Duty cycle (%)[2]
20 : 80
7 : 93
47 : 53
40 : 60
33 : 67
27 : 73
20 : 80
13 : 87
5 : 95
50 : 50
47 : 53
43 : 57
41 : 59
36 : 64
33 : 67
30 : 70
27 : 73
23 : 77
20 : 80
16 : 84
10 : 90
5 : 95
50 : 50
[1] Nominal frame frequency calculated for the default clock frequency of 9600 Hz.
[2] Duty cycle definition: % HIGH-level time : % LOW-level time.
[3] Default value.
PCA8537
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 7 April 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
13 of 82
Share Link: 